aubrey201
aubrey201 aubrey201
  • 10-02-2016
  • Mathematics
contestada

If r = 8 units and x = 8 units, then what is the total surface area of the cylinder shown above?

If r 8 units and x 8 units then what is the total surface area of the cylinder shown above class=

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RASEA23
RASEA23 RASEA23
  • 10-02-2016
The surface area of a cylinder is the area of the top and bottom circle and the side of the cylinder, which is really a rectangle with the circumference of the circle for the length and x for the width.
So the formula is [tex]2 \pi rh+2 \pi r^2[/tex]
Plug in r  and x into the equation;
[tex]2* \pi *8*8 +2* \pi *8^{2} [/tex]
[tex]128 \pi +128 \pi [/tex]
[tex]256 \pi [/tex]
which is about 804.25 square units since it is an area.
Hope this helps. 
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